dtod.hh revision 4762:c94e103c83ad 
1/*
2 * Copyright (c) 206, 2004-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Ali Saidi
29 */
30
31/** @file
32 * This device acts as a simple time of date device. It's implemented as a
33 * simple device register read.
34 */
35
36#ifndef __DEV_SPARC_DTOD_HH__
37#define __DEV_SPARC_DTOD_HH__
38
39#include <vector>
40
41#include "base/range.hh"
42#include "dev/io_device.hh"
43#include "params/DumbTOD.hh"
44
45/**
46 * DumbTOD simply returns some idea of time when read.  Until we finish with
47 * legion it starts with the start time and increments itself by 1000 each time.
48 */
49class DumbTOD : public BasicPioDevice
50{
51  private:
52    uint64_t todTime;
53
54  public:
55    typedef DumbTODParams Params;
56    DumbTOD(const Params *p);
57
58    const Params *
59    params() const
60    {
61        return dynamic_cast<const Params *>(_params);
62    }
63
64    virtual Tick read(PacketPtr pkt);
65    virtual Tick write(PacketPtr pkt);
66
67    /**
68     * Serialize this object to the given output stream.
69     * @param os The stream to serialize to.
70     */
71    virtual void serialize(std::ostream &os);
72
73    /**
74     * Reconstruct the state of this object from a checkpoint.
75     * @param cp The checkpoint use.
76     * @param section The section name of this object
77     */
78    virtual void unserialize(Checkpoint *cp, const std::string &section);
79
80
81};
82
83#endif // __DEV_BADDEV_HH__
84